Metabo G 400 Operating instructions

Brand: Metabo

Model: G 400

Category: Power tools

Type: Operating instructions

This manual is also suitable for

GP 400

www.metabo.com

en Operating Instructions 4

fr Mode d'emploi 10

es Instrucciones de manejo 17

G 400

GP 400

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ENGLISHen

Operating Instructions

The straight grinders are designed...

- ... for fine grinding work with mounted points on

metal.

- ... for fine cutting work with small cutting wheels on

metal.

- ... for routing with end mill cutters on non-ferrous

metals, plastics, hardwood, etc.

- ...for working with paint and round wire brushes

- ...for working with polishing bobs

- ...for working with felt polishing tools

- ...for working with lamellar grinding wheels

The machine is not suitable for work with polishing

bells. It is for dry processing only.

The user bears sole responsibility for any damage

caused by improper use.

Generally accepted accident prevention regula-

tions and the enclosed safety information must be

observed.

For your own protection and for the

protection of your electrical tool, pay

attention to all parts of the text that are

marked with this symbol!

WARNING – Reading the operating instruc-

tions will reduce the risk of injury.

Pass on your electrical tool only together with these

documents.

General Power Tool Safety Warnings

WARNING – Read all safety warnings and

instructions. Failure to follow the warnings

and instructions may result in electric shock, fire

and/or serious injury.

Save all warnings and instructions for future

reference! The term "power tool" in the warnings

refers to your mains-operated (corded) power tool

or battery-operated (cordless) power tool.

2.1 Work area safety

a) Keep work area clean and well lit. Cluttered or

dark areas invite accidents.

b) Do not operate power tools in explosive

atmospheres, such as in the presence of flam-

mable liquids, gases or dust. Power tools create

sparks which may ignite the dust or fumes.

c) Keep children and bystanders away while

operating a power tool. Distractions can cause

you to lose control.

2.2 Electrical safety

a) Power tool plugs must match the outlet.

Never modify the plug in any way. Do not use

any adapter plugs with earthed (grounded)

power tools. Unmodified plugs and matching out-

lets will reduce risk of electric shock.

b) Avoid body contact with earthed or

grounded surfaces, such as pipes, radiators,

ranges and refrigerators. There is an increased

risk of electric shock if your body is earthed or

grounded.

c) Do not expose power tools to rain or wet

conditions. Water entering a power tool will

increase the risk of electric shock.

d) Do not abuse the cord. Never use the cord

for carrying, pulling or unplugging the power

tool. Keep cord away from heat, oil, sharp

edges or moving parts. Damaged or entangled

cords increase the risk of electric shock.

e) When operating a power tool outdoors, use

an extension cord suitable for outdoor use.

Use of a cord suitable for outdoor use reduces the

risk of electric shock.

f) If operating a power tool in a damp location is

unavoidable, use a residual current device

(RCD) protected supply. Use of an RCD reduces

the risk of electric shock.

2.3 Personal safety

a) Stay alert, watch what you are doing and use

common sense when operating a power tool.

Do not use a power tool while you are tired or

under the influence of drugs, alcohol or medi-

cation. A moment of inattention while operating

power tools may result in serious personal injury.

b) Use personal protective equipment. Always

wear eye protection. Protective equipment such

as dust mask, non-skid safety shoes, hard hat, or

hearing protection used for appropriate conditions

will reduce personal injuries.

c) Prevent unintentional starting. Ensure the

switch is in the off-position before connecting

to power source and/or battery pack, picking

up or carrying the tool. Carrying power tools with

your finger on the switch or energising power tools

that have the switch on invites accidents.

d) Remove any adjusting key or wrench before

turning the power tool on. A wrench or a key left

attached to a rotating part of the power tool may

result in personal injury.

e) Do not overreach. Keep proper footing and

balance at all times. This enables better control of

the power tool in unexpected situations.

f) Dress properly. Do not wear loose clothing or

jewellery. Keep your hair, clothing and gloves

away from moving parts. Loose clothes, jewellery

or long hair can be caught in moving parts.

g) If devices are provided for the connection of

dust extraction and collection facilities, ensure

these are connected and properly used. Use of

dust collection can reduce dust-related hazards.

2.4 Power tool use and care

a) Do not force the power tool. Use the correct

power tool for your application. The correct

1. Specified Use

2. General safety instructions

ENGLISH en

power tool will do the job better and safer at the rate

for which it was designed.

b) Do not use the power tool if the switch does

not turn it on and off. Any power tool that cannot

be controlled with the switch is dangerous and must

be repaired.

c) Disconnect the plug from the power source

and/or the battery pack from the power tool

before making any adjustments, changing

accessories, or storing power tools. Such

preventive safety measures reduce the risk of

starting the power tool accidentally.

d) Store idle power tools out of the reach of

children and do not allow persons unfamiliar

with the power tool or these instructions to

operate the power tool. Power tools are

dangerous in the hands of untrained users.

e) Maintain power tools. Check for misalign-

ment or binding of moving parts, breakage of

parts and any other condition that may affect

the power tool's operation. If damaged, have

the power tool repaired before use. Many acci-

dents are caused by poorly maintained power tools.

f) Keep cutting tools sharp and clean. Properly

maintained cutting tools with sharp cutting edges

are less likely to bind and are easier to control.

g) Use the power tool, accessories and tool bits

etc. in accordance with these instructions,

taking into account the working conditions and

the work to be performed. Use of the power tool

for operations different from those intended could

result in a hazardous situation.

2.5 Service

a) Have your power tool serviced by a qualified

repair person using only identical replacement

parts. This will ensure that the safety of the power

tool is maintained.

3.1 General safety instructions for grinding,

sanding, wire brushing, polishing, rout-

ing or abrasive cutting-off operations:

a) This power tool is intended to function as a

grinder, sander, wire brush, polisher for

routing or cut-off tool. Refer to all

safety warn-

ings,

instructions, illustrations and specifica-

tions provided with this power tool. Failure to

follow all the instructions may result in electric

shock, fire and/or serious injury.

b) Do not use any accessories that are not

specifically designed and recommended by the

tool manufacturer. The simple fact that an acces-

sory can be attached to your power tool does not

ensure safe operation.

c) The rated speed of the accessory must be at

least equal to the maximum speed marked on

the power tool. Accessories running faster than

their rated speed can break and fly apart.

d) The outside diameter and the thickness of

your accessory must match the indicated

dimensions of your power tool. Incorrectly sized

accessories cannot be adequately protected or

controlled.

e) Grinding wheels, grinding rollers and other

accessories must fit the spindle or collet of

your power tool precisely. Accessories that do

not fit precisely into the power tool mount will rotate

unevenly, vibrate excessively and may cause loss

of control.

f)Wheels, cylinder wheels, cutting tools or

other accessories that are mounted on a

mandrel must be inserted fully in the collet or

chuck. The "overhang" or free section of the

mandrel between the grinding tool and collet or

chuck must be as small as possible. If the

mandrel is not adequately clamped or if the grinding

tool is too far advanced, the accessory may become

loose and be ejected at high speed.

g) Do not use a damaged accessory. Before

each use, inspect accessories such as abra-

sive wheels for chips and cracks, grinding

wheels for cracks, tears or excess wear, wire

brushes for loose or cracked wires. If a power

tool or accessory is dropped, check it for

damage or install an undamaged accessory.

After inspecting and installing an accessory,

position yourself and bystanders away from

the plane of the rotating accessory and run the

power tool at maximum no-load speed for one

minute. Damaged accessories will normally break

apart during this test time.

h) Wear personal protective equipment.

Depending on application, use a face shield,

safety goggles or safety glasses. As appro-

priate, wear a dust mask, hearing protectors,

gloves and workshop apron capable of stop-

ping small abrasive or workpiece fragments.

The eye protection must be capable of stopping

flying debris generated by various operations. The

dust mask or respirator must be capable of filtering

particles generated by your operation. Prolonged

exposure to high intensity noise may cause hearing

loss.

i) Keep bystanders a safe distance away from

your work area. Anyone entering the work area

must wear personal protective equipment.

Fragments of a workpiece or broken accessory may

fly into the air and cause injury beyond the imme-

diate area of operation.

j) When performing an operation where the

accessory may contact hidden wiring or its

own cord, hold the power tool by the insulated

gripping surfaces only. If the accessory contacts

a "live" wire, exposed metal parts of the power tool

may also become "live" and give the operator an

electric shock.

k) Always hold the power tool firmly when

starting it. When you run the tool up to full speed,

the motor's reaction torque can cause the power

tool to twist.

l) If possible, use collet chucks to secure the

workpiece. Never hold a small workpiece in

one hand while using the power tool in the

other. By securing small workpieces, you have

both hands free to control the power tool more

effectively. When cutting curved workpieces such

3. Special Safety Instructions

ENGLISHen

as dowels, rods or pipes, bear in mind that these

workpieces will tend to roll away from you, thus

possibly jamming the accessory and jerking it

towards you.

m) Position the cord clear of spinning accesso-

ries. If you lose control, the cord may be cut or

snagged and your hand or arm may be pulled into

the spinning accessory.

n) Never lay the power tool down until the

accessory has come to a complete stop. The

spinning accessory may grip the surface and pull

the power tool out of your control.

o) After changing accessories or settings on

the power tool, you must securely tighten the

collet chuck nuts, the chuck and any other

clamping elements. Loose clamping elements

can slip unexpectedly and result in loss of control

over the power tool; unsecured, rotating compo-

nents are then ejected at speed.

p) Do not run the power tool while carrying it at

your side. Accidental contact with the spinning

accessory could snag your clothing, pulling the

accessory into your body.

q) Regularly clean the power tool’s air vents.

The motor’s fan will draw the dust inside the housing

and excessive accumulation of powdered metal

may cause electrical hazards.

r) Do not operate the power tool near flam-

mable materials. Sparks could ignite these mate-

rials.

s) Do not use accessories that require liquid

coolants. Using water or other liquid coolants may

result in electrocution or shock.

3.2 Kickback and Related Warnings

Kickback is a sudden reaction to a pinched or

snagged grinding wheel, abrasive belt, brush or any

other accessory. Pinching or snagging causes the

rotating accessory to stop abruptly, which in turn

causes the uncontrolled power tool to be forced in

the direction opposite the accessory’s rotation at

the point of jamming.

For example, if a grinding wheel is snagged or

pinched by the workpiece, the edge of the wheel

penetrating the workpiece may get caught, causing

the grinding wheel to break away or result in kick-

back. The wheel may then be propelled towards or

away from the operator, depending on the direction

of the wheel’s movement at the point of pinching.

Grinding wheels may also break under these condi-

tions.

Kickback is the result of power tool misuse and/or

incorrect operating procedures or conditions. It can

be avoided by taking proper precautions as given

below.

a) Maintain a firm grip on the power tool and

position your body and arm to allow you to

resist kickback forces. The operator can control

torque reactions or kickback forces, if proper

precautions are taken.

b) Be especially careful when working around

corners, sharp edges etc. Avoid bouncing and

snagging accessories off the workpiece. The

rotating accessory tends to jam around corners,

sharp edges and in the event of bouncing, thus

causing loss of control or kickback.

c) Do not use a toothed saw blade. Such blades

create frequent kickback and loss of control.

d) Always insert the accessory in the material

in the same direction as the cutting edge

leaves the material (that is, in the same direc-

tion as the swarf is ejected). If you insert the

power tool in the wrong direction, the cutting edge

of the tool will break out of the workpiece, thus

pulling the tool in this advance direction.

e) Always clamp the workpiece securely in

position when using rotary files, small cutting

wheels, high-speed milling tools or hard metal

milling tools. Even if only slightly tilted in the

groove, these tools can get caught and cause kick-

back. A cut-off wheel that get caught usually breaks.

If rotary files, high-speed milling tools or hard metal

milling tools catch, the tooling insert may pop out of

the groove and cause the user to lose control over

the power tool.

3.3 Safety Warnings Specific for Grinding

and Cutting-Off Operations:

a) Only use wheel types that are authorised for

your power tool and only use them for the

recommended applications. For example:

Never grind with the side of a cut-off wheel.

Abrasive cut-off wheels are intended for peripheral

grinding. Lateral forces applied to these wheels

may cause them to shatter.

b) For conical and straight threaded mounted

points, only use mandrels that are undamaged

and of the correct size and length, without

undercuts on the shoulder. Using suitable

mandrels reduces the risk of breakage.

c) Do not “jam” the cut-off wheel or apply

excessive pressure. Do not attempt to make an

excessive depth of cut. Overstressing the wheel

increases the loading and susceptibility to twisting

or binding of the wheel in the cut and the possibility

of kickback or wheel breakage.

d) Avoid leaving your hands in the area behind

or in front of the rotating cut-off wheel. If you use

your hand to push away the cut-off wheel in the

workpiece, the power tool and the spinning wheel

may be propelled directly towards you in the event

of kickback.

e) If the wheel jams or if you interrupt work for

any reason, switch off the power tool and hold

the power tool motionless until the wheel

comes to a complete stop. Never attempt to

remove the cut-off wheel from the cut while the

wheel is in motion, otherwise kickback may

occur. Investigate and take corrective action to

eliminate the cause of the wheel jam.

f) Do not restart the tool while it is still in the

workpiece. Let the wheel reach full speed and

carefully reenter the cut. The wheel may jam,

walk up or kickback if the power tool is restarted in

the workpiece.

Make sure that you support panels or any

large workpiece to minimise the risk of kick-

ENGLISH en

back caused by a jammed cut-off wheel. Large

workpieces tend to sag under their own weight.

Workpieces must be supported on both sides of the

wheel, near the cut and also along the edge.

h) Use extra caution when making a "pocket

cut" into existing walls or other blind areas. The

protruding wheel may cut gas or water pipes, elec-

trical wiring or objects that can cause kickback.

3.4 Safety Warnings Specific for Wire Brush-

ing Operations:

a) Be aware that wire bristles are lost by the

brush even during ordinary operation. Do not

overstress the wires by applying an excessive

load to the brush. The wire bristles can easily

penetrate light clothing and/or skin.

b) Before using a brush, allow it to run for at

least one minute at operating speed. Make sure

that no one is positioned in front of or in line

with the brush during this time. Loose wire bris-

tles may be released during the running-in time.

c) Direct the rotating brush away from you.

When working with these brushes, remember that

small particles and tiny wire bristles may be ejected

at high speed and may penetrate the skin.

3.5 Additional Safety Instructions

WARNING – Always wear protective

goggles.

Use elastic cushioning layers if they have been

supplied with the abrasive and if required.

Observe the specifications of the tool or accessory

manufacturer! Protect the discs from grease or

impacts!

Abrasives must be stored and handled with care in

accordance with the manufacturer's instructions.

Never use parting grinder discs for roughing work.

Do not apply pressure to the side of parting grinder

discs.

The workpiece must lay flat and be secured against

slipping, e.g. using clamps. Large workpieces must

be supported adequately.

Keep hands away from the rotating tool! Remove

swarf and similar material only when the machine is

at a standstill.

Prior to use, ensure that the coated abrasive is

properly fitted and secured. Run the tool in idling for

60 seconds in a safe position and bring to a stand-

still immediately if there are significant vibrations or

if other deficiencies are determined. If such a situa-

tion occurs, check the machine to determine the

cause.

Ensure that sparks produced during work do not

constitute a risk to the user or other personnel and

are not able to ignite inflammable substances.

Endangered areas must be protected with flame-

resistant covers. Make sure that fire-risk areas are

always provided with suitable fire extinguishers.

California Prop 65 08_2018

Some dust created by power

sanding, sawing, grinding,

drilling, and other construction activities

contains chemicals known to cause cancer,

birth defects or other reproductive harm. Some

examples of these chemicals are:

• Lead from lead-based paints,

• Crystalline silica from bricks and cement and

other masonry products, and

• Arsenic and chromium from chemicallytreated

lumber.

Your risk from these exposures varies, depending

on how often you do this type of work. To reduce

your exposure to these chemicals: work in a well

ventilated area, and work with approved safety

equipment, such as those dust masks that are

specially designed to filter out microscopic

particles.

Materials emitting dusts or vapours that may be

harmful to health (e.g. asbestos) must not be

processed.

When working in dusty conditions, ensure that

ventilation openings are not blocked. If it becomes

necessary to remove dust, first disconnect the

power tool from the mains supply (use non-metallic

objects) and avoid damaging internal components.

Damaged, eccentric or vibrating tools must not be

used.

For safety reasons, always ensure the rubber

sleeve is fitted while you work (4).

Pull the plug out of the plug socket before any

adjustments, conversions or servicing are

performed.

During machining, of metals in

particular, conductive dust can form

deposits inside the machine. This can lead to the

transfer of electrical energy onto the machine

housing. This can mean a temporary danger of

electric shocks. This is why it is necessary when the

machine is running to blow compressed air through

the rear ventilation slots of the machine regularly,

frequently and thoroughly. The machine must be

held firmly in this case.

We recommend using a stationary extractor system

and connecting a residual current circuit-breaker

(FI) upstream. When the machine is shut down via

the FI circuit-breaker, it must be checked and

cleaned. For information on cleaning the motor, see

chapter 7. Cleaning.

SYMBOLS ON THE TOOL:

.......... Class II Construction

V .............. volts

A .............. amperes

Hz ............ hertz

W ............. watts

~.............. alternating current

rpm .........revolutions per minute

.../min...... revolutions per minute

n ............. rated speed

See page 2.

1 Collet chuck

WARNING

4. Overview

ENGLISHen

2 Collet chuck nut

3 Spindle

4 Rubber sleeve *

5 Slide switch *

6 Main handle

7 Switch-on lock

8 Trigger *

equipment-specific

Before plugging in the device, check that the

rated mains voltage and mains frequency, as

specified on the rating label, match your power

supply.

6.1 Collet chucks

The tool's shank diameter must correspond

exactly to the collet bore of the collet chuck (1)!

Various collet chucks are available for different

shank diameters. See Accessories section.

6.2 Fitting the tools

Pull the mains plug from the socket.

Only use tools that are suited to the no-load

speed of your machine. See Technical Speci-

fications.

The tool's shank diameter must correspond

exactly to the collet bore of the collet chuck (1)!

In the case of mounted points or mandrels, the

maximum open shank length l

or maximum

permissible length specified by the manufacturer

must not be exceeded!

Insert the tool (with the full length of the shank) in the

collet chuck (1).

(3) Bring the spindle to a standstill with the 13-mm

spanner provided for this purpose.

Using the 19-mm spanner, tighten the collet chuck

nut (2).

If there is no tool inserted in the collet chuck,

you can tighten the collet chuck manually

rather than with the spanner.

6.3 Switching On and Off

Always guide the machine with both hands.

Switch on first, then guide the

accessory

towards the workpiece.

Avoid inadvertent starts: always switch the

tool off when the plug is removed from the

mains socket or if there has been a power cut.

In continuous operation, the machine

continues running if it is forced out of your

hands. Therefore always hold the machine with

both hands using the handles provided (4), (6),

maintain a steady position and concentrate on your

work.

Machines with slide switch:

Switching on: Push the slide switch (5) forward.

For continuous activation, now tilt downwards until

it engages.

Switching off: Press the rear end of the slide

switch (5) and release.

Machines with safety switch (with dead-man

function):

(Machines with the designation WP...)

Switching on: Slide the switch-on lock (7) in the

direction of the arrow and press the trigger (8).

Switching off: release the trigger switch (8).

6.4 Working instructions

Grinding, sanding, polishing or using wire

brushes: Press down the machine evenly and

move it from side to side over the surface.

Routing: Press down the machine evenly.

Separating:

Always work against the run of the disc

(see illustration). Otherwise there is

the danger of the machine kicking

back from the cut out of control. Guide

the machine evenly at a speed suit-

able for the material being processed. Do not tilt,

apply excessive force or sway from side to side.

7.1 Motor cleaning

To clean the motor, apply jets of compressed air

through the rear ventilation slots of the machine

regularly, frequently and thoroughly. The machine

must be held firmly in this case.

Use only genuine Metabo accessories.

Use only accessories that fulfil the requirements

and specifications listed in these operating instruc-

tions.

Fit accessories securely. Secure the machine if it is

operated in a bracket. Loss of control can cause

personal injury.

5. Initial Operation

6. Use

7. Cleaning

8. Accessories

5 6

ENGLISH en

A Collets (including nut)

dia.

3 mm = 6.31947

dia.

1/8“ = 6.31948

dia.

6 mm = 6.31945

dia.

1/4“ = 6.31949

dia.

8 mm = 6.31946

B Clamping frame 6.28329 for clamping during

work with flexible shafts, including:

C Clamping bracket 6.27107 for safe securing to

the work bench (tighten clamping screw).

For a complete range of accessories, see

www.metabo.com or the catalogue.

Repairs to electrical tools must be carried out

by qualified electricians ONLY!

If you have Metabo electrical tools that require

repairs, please contact your Metabo service centre.

For addresses see www.metabo.com.

You can download spare parts lists from

www.metabo.com.

Observe national regulations on environmentally

compatible disposal and on the recycling of disused

machines, packaging and accessories.

Explanation of details on page 3. Subject to

changes serving technical progress.

n =No-load speed (maximum speed)

=On-load speed

120 V

= Current at 120 V

=Nominal power input

=Power output

max

=Maximum grinding wheel diameter

max

=Maximum thickness of bonded grinding

wheels

d =Collet bore of the collet chuck

m =Weight without mains cable

The technical specifications quoted are subject to

tolerances (in compliance with the relevant valid

standards).

Wear ear protectors!

9. Repairs

10. Environmental Protection

11. Technical specifications

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Metabowerke GmbH

Metabo-Allee 1

72622 Nuertingen

Germany

www.metabo.com

170 27 2280 - 0718 CP

Metabo G 400 Operating instructions

Brand: Metabo

Model: G 400

Category: Power tools

Type: Operating instructions

This manual is also suitable for

GP 400

Download PDF

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in other languages

français: Metabo G 400 Mode d'emploi
español: Metabo G 400 Instrucciones de operación

Metabo G 400 Operating instructions

This manual is also suitable for

Metabo G 400 Operating instructions

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